//File Name: my.cpp
//Author: 
//Mail: 
//Created Time: Sat Apr 29 14:27:12 2017
#include<iostream>
#include<typeinfo>
using namespace std;
template<typename T,typename U>
void fun(T && t,U && u)
{
    decltype(t+u) my{};
    std::cout<<typeid(my).name()<<std::endl;
}
int main()
{
    int a{};
    int b{};
    fun(a,b);
    return 0;
}
